ERD_maps_2001

ERD maps (s. Fig. 1 and Fig. 2) and animated maps (s. Fig. 3 and Fig. 4), low vs. high IQ, where

$$\% ERD=\frac{\mu V^2_R-\mu V^2_A}{\mu V^2_R}⋅100,$$

with alpha power $\mu V^2$ from the reference interval $R$ and activity interval $A$, see Neubauer et al. (2002).

Where power $P_x$ within given frequency $f$, with upper alpha band between $10.70-12.69 Hz$ in $\mathbb C$ is defined by

$$P_x(f)=\Re (a_x)^2+\Im (a_x)^2,$$

c.f. Schrausser (2000), also Schrausser and Neubauer (2024).

Figure 1. IQ low @ $t=6000 ms$.

Figure 2. IQ high @ $t=6000 ms$.

Figure 3. IQ low, $t=0-8000 ms$.

Figure 4. IQ high, $t=0-8000 ms$.

References

Neubauer, A., Fink, A., & Schrausser, D. G. (2002). Intelligence and neural efficiency: The influence of task content and sex on brain IQ relationship. Intelligence, 30(6), 515-536. DOI:10.1016/S0160-2896(02)00091-0

Schrausser, D. G. (2000). Spectral and Coherence Analysis: Algorithms. DOI:10.13140/RG.2.2.28637.90083

Schrausser, D. G., & Neubauer, A. C. (2024). P13461 Instruction Movie: Installation of EEG Cap and Electrodes. Zenodo, December 10, 2024. DOI:10.5281/zenodo.14364000